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sides. Handrails are not required on curb ramps or adja- cem to seating in assembiy areas. Handrails shal! comply with 11-4.26 and shal1 nave the following features: {Ii Handrails shall be provided along both sides of ramp segments. The inside handrail on switchback or dogleg ramps snaIl always be continuous. (3) The dear space between the handrail and the wall shall be 11/: inches (38 mm). (4) Gripping surfaces shall be continuous. (5) Top of handrail gripping surfaces shall be mounted between 34 inches and 38 inches (865 mm and 965 mm) above ramp surfaces. (6) Ends or handrails shall be either rounded or returned smoothly to floor, walL or post. (7) Handrails shall not rotate within their fittings. . - 11-4.8.6 Cross Slope and Surfaces. The cross slope of ramp surfaces shall be no greater than 1:50. Ramp sur- races shall comply with 11-4-5- H-4.8.7 Edge Protection. Ramps and landings with drop-offs shall have curbs, walls, railings, or projecting surfaces that prevent people from slipping off the ramp. Curbs shall be a minimum of 2 inches (50 rom) high (See Figure 17). 11-4.8.8 Outdoor Conditions. Outdoor ramps and their approaches shall be designed so that water will not accu- mulate on walking surfaces. 11-4.9 Stairs. H-4.9.Jl Minimum Nu~ber. Stairs required to be acces- sible by 11-4.1 shall contPly with i 1-4.9. , 11-4.9.2 Treads and RiJrs. fJn any given flight of stairs, all steps shall have uniiPrm riser heights and uniform tread widths. Stair treads.\'Shall be no less than 11 inches (280 mm) wide, measure from riser to ;-iser (See Figure 18(a). Open risers are not ermitted. 11-4.9.3 Nosings. The un~ersides of nosing shal! not be abrupt. The radius of curv~ure at the leading edge of the tread shall be no greater than 112 inch 03 mm). Risers shall be sloped or the underside of the nosing shall have an angle not less than 60 degrees from the horizontaL Nosing shall project no more -than Ili2 Inches (38 mm I (See Figure l8'L ;::~ORIDA BUILDING CODE - 9UILDING 11-4.9.4 Handrails. Stairways shall have handrails at both sides of all stairs. Handrails shall comply with 11- 4.16 and shall have the fOll~wing features: .- , (1) Handrails shall be c~ntinuous along both sides or stairs. The inside handrail/on switchback or dogleg stairs shall always be continuo!ts (See Figure 19(a) and (b)). , (:~) If handrails are not cbntinuous, they shall extend at least 11 inches (305 nuP) beyond the top riser and at least 12 inches (305 rrub) plus the width of one tread beyond the bott~m riser! At the top, the extension shail be parallel wi.th .the floCf or .ground surfac_e. At t~e bot- tom, the hananul shall f;ontmue to slope tor a distance of the width of one trbad from the bottom riser; the remainder or the extehsion shall be horizontal (See Figure 19( C) and (d)). (Handrail extensions shall com- ply with 11-4.4. (3) The clear space between handrails and wall shall be 11/2 inches (38 mrn). (4) Gripping surfaces I shall be uninterrupted by newel posts, other constructi:on elements, or obstructions. (5) Top of handrail gnpping surface shall be mounted between 34 inches apd 38 inches (865 mm and 965 mrn) above stair nosifIg. (6) Ends of handrails shall be either rounded or returned smoothly to floor, wall or post. (7) Handrails shall/not rotate within their fittings. 11-4.9.5 Detectabie !warnings at Stairs. (Reserved). 11-4.9.6 Outdoor Conditions. Outdoor stairs and their approaches shall be/designed so that water will not accu- mulate on walking surfaces. 11-4.10 ELEVATORS. 11-4.10.1 General. Accessible elevators shall be on an accessible route and shall comply with 11-4.10 and with the ASME AI7.1-11990, Safety Code for Elevators and Escalators. Freight elevators shall not be considered as meeting the requirements of this section unless the only elevators provided;are used as combination passenger and freight elevators for the public and employees. 11-4.10.2 Automatic Operation. Elevator operation shall be automatic. Each car shall be equipped with a self- leveling feature that will automatically bring the car to floor landings within a tolerance of 112 inch (13 mm) under rated loading to zero loading conditions. This self- leveling feature shaH be automatic and independent or the operating device and shall correct the overtravei or under- traveL H-4.10.3 Hall Call Buttons. Call buttons in elevator lobbies and hails shall be centered at 42 inches (1065 mm) 11.29